A convicted murderer is back in prison after a hearing this week in Marion County. Steven Dean McGinnis was back in the county for a post-conviction hearing in Marion County District Court. McGinnis was convicted in 2009 of murdering Knoxville resident Robert Ohl in 2008. A post-conviction hearing is generally the last means a person has to overturn a conviction. A judgment from the hearing could come as soon as late next month.